<!--
 * @Author: 高瑞寒 15932717091@163.com
 * @Date: 2022-04-19 10:20:31
 * @LastEditTime: 2022-04-19 13:51:56
 * @LastEditors: 高瑞寒 15932717091@163.com
 * @Description: 工厂模式
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  <title>工厂模式</title>
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<!-- 没看懂,以后再学 -->
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